Abstract: During print operation, it sometimes happened that an intermediate file of print data becomes so huge in gigabytes as to make printing impossible. The present invention is constituted to permit a computer: a print data acquisition step P1 to acquire print data; an intermediate file creation step P2 to divide the acquired print data into parts while keeping the file size of each parts within certain bounds and thereby create a plurality of intermediate files, and an actual-data-for-printing creation step P3 to read the created intermediate files into the memory for pre-determined conversions, and thereby create actual-data-for-printing. The effect is that the intermediate file size does not become so huge as to make printing impossible, and therefore printing can certainly be done even if a huge amount of print data is created.

Abstract: Simultaneous display of a page preview and an enlarged view of a spot on the page was so far impossible. Supplied data for print is converted to bitmap data from which a previewer 33b simultaneously displays preview images in the page view display area 101, composite view display area 102 and zoomed-in view display area 103. Thus, the user can view a plurality of parallel, different-scale views of an object image to print at a time. To check different-scale views of an object image to print in the similar prior-art method, the user must change the displayed preview. However, the user need not to do that in the method of the present invention; that is, the operability can be enhanced.

Abstract: During print operation, it sometimes happened that an intermediate file of print data becomes so huge in gigabytes as to make printing impossible. The present invention is constituted to permit a computer: a print data acquisition step P1 to acquire print data; an intermediate file creation step P2 to divide the acquired print data into parts while keeping the file size of each parts within certain bounds and thereby create a plurality of intermediate files, and an actual-data-for-printing creation step P3 to read the created intermediate files into the memory for pre-determined conversions, and thereby create actual-data-for-printing. The effect is that the intermediate file size does not become so huge as to make printing impossible, and therefore printing can certainly be done even if a huge amount of print data is created.

Abstract: Simultaneous display of a page preview and an enlarged view of a spot on the page was so far impossible.